A Numerical Study of an Injection-Compression Molding Process by Using a Moving Grid

Article Preview

Abstract:

A numerical study for the simulation of melt in an injection-compression molding process by using moving grid is proposed in this paper. The fully three-dimensional Navier-Stokes equations are solved together with the front transport equation using a front capturing approach. Different from previous studies, the proposed model can take the movement of cavity through a moving grid approach. The melt filling of a disk is conducted to illustrate the applications of the proposed numerical model with several computations under different processing conditions. The numerically predicted results show the influence of compression time or compression speed in determining the molding pressure and the melt temperature.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

472-476

Citation:

Online since:

December 2012

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] S. C. Chen, Y. C. Chen, H. S. Peng, Simulation of injection-compression-molding process. II. Influence of process characteristics on part shrinkage, J. Applied Polymer Sci. 75 (2000) 1640-1654.

DOI: 10.1002/(sici)1097-4628(20000328)75:13<1640::aid-app10>3.0.co;2-l

Google Scholar

[2] R. Y. Chang, W. Y. Chang, W. H. Yang, Three-dimensional simulation of injection-compression molding of a compact disc, ANTEC Conference Proceedings (2001), 1-5.

Google Scholar

[3] I. H. Kim, S. J. Park, S. T. Chung, T. H. Kwon, Numerical modeling of injection/compression molding for center-gated disk: Park II. Effect of compression stage, Polymer Engineering and Science 39 (1999) 1943-(1951).

DOI: 10.1002/pen.11587

Google Scholar

[4] S. C. Chen, Y. C. Chen, N. T. Cheng, M. S. Huang, Simulation of injection-compression mold-filling process, Int. Comm. Heat Mass Transfer 25 (1998) 907-917.

DOI: 10.1016/s0735-1933(98)00082-7

Google Scholar

[5] S. W. Chau, Y. D. Lin, Three-dimensional simulation of injection-compression molding process, ANTEC Conference Proceedings (2007) 2504-2508.

Google Scholar

[6] S. W. Chau, Numerical investigation of free-stream rudder characteristics using a multi-block finite volume method, PhD Thesis, Universit¨at Hamburg, Hamburg, (1997).

Google Scholar

[7] M. Peri´c, J. H. Ferziger, Computational Methods for Fluid Dynamics, Springer, Berlin, (1996).

Google Scholar

[8] S. V. Pantankar, Numerical Heat Transfer and Fluid Flow, Hemisphere, New York, (1980).

Google Scholar